Pedriok



(No Model.)

D. W. PEDBIGK. CHUCK FOR PLANIN'G VALVES. y

Patented sept. 4, 1883l INVENTOR M l UNI'I'ED ySfndrns PATENT, OFFICE.

DANIEL w. rrniucx, or PHILADELPHIA, ruNnsrLvnnm.m

CHUCK. FOR PLANING VALVES.

snncIFIcATIoN fermingpert of Lettere Patent No. 284,227, dated september4, 1883. f

\ V.dppiieetieii filed dimite, Issa (No model.) f

M To all zuhomt't may concern: o

Be itknown that I, DANIELW. PEDRICK, of 'the city and county ofPhiladelphia, in .the

l [convenient and effective meansfor adjusting f i other steamengines,orother objects of analogous` form, in proper position to be acted upon`and securing slide-valves of locomotive and by the tool of aportableplaning-machine,

andthereby tofacilitate repairs to said engmes, particularly inroundhouses, or in locatlonswhere a fixed planing-machine is Ilot oreadily accessible `or cannot `be used eco omically for thepu'rpose. i

To this end my improvements consist in certain novel devices andcombinations, including i `a baselplate, a series of planeresupports`connected thereto, a'valve-clamp which is adjustable longitudinally`uponfthe base-plate, and mechanism4 for adjusting and supportingaplaner parallel to and-at required `distance from the base-plate; also,a base-plate having one or more guidesior ways fixed thereto, a

` pair of clampingjaws utted to move longitudinally on said guides, andanndjusting-scrcw adapted to rotate in bearings` on the base` i plate,and having right and leftlhand threads,

...which respectively engage the clamping-jaws.

i The improvements claimed 'are `hereinafter` a `more fully set forth. a

In the accompanying drawings, Figure 4lois a View in perspective ofiachuck for planing `valves embodying my invention; Fig. 2, a plan or,top` Aviewvof the same; and Figs. 3 and 4, longitudinaland transversesections, respectively, through the same, 'taken at the :lines m x andyy, respectively, of Fig. 2.

In the` practice of my inventionI form,

. arpreferably of cast-iron, stout bed enbase plate, A, havingasupportfor aportable plan- `ing-machine, as presently to be described, lo-

' cated at or adjacent to each of its corners.

A pair of dovetailed or inclined sidedguides or wa s A are cast u on andextend cenltrallyland longitudinally across the base-plate. ,Aclamping-screw, B, having a right-ha`nd i d thread, b, and a left-handthread, I/,each ex- '-basep1ate y Iscrtmgin one or the other direction,such rotending from its middle portion the base-plate atthe ends of saidguides, and

Y a pair of clamping-jaws, C C, having nuts on their under sides, whichengage, respectively,

a a to a journal, formed at or near one of its ends, is fitted to rotatebetween the guides A" in. bearings a on the threads b and b', and aremounted and adapt ed to slide freely upon the guides A', so as to bemovable toward -and from the centerof .the the rotation of theclamping`tationloeing effected by the application of a crank or socket wrench'to one of the squared ends of the screw.V Y o d In the instancefshown,each of the supports for the planeriscomposed of a stud, D, se

cured in and projecting vertically from the base-plate at or near one ofits corners, and '7 a sleeve or tubular standard', D', which fits aroundthestud D and rests upon the base-A plate, said sleeve `having anexternal thread at and adjacent to its upper end, and an index porseries of graduations, d marked upon" its I exterior below said thread.A supporting nutD2, engages the thread of the sleeve D, the uppersurface of said nut being faced olf truly to afford a proper bearing,and having a central opening, through which thestud `D passes freely.Thev frame of the" planer is clamped between the supporting-nuts D2 andwashers d2, which are tightened against its up! per facebyclamping-nutsDengaging threads d i. `f

on the studs D, and to provide alfirmer and more accurate bearing thewashers d2 are dished or made concave att'op, and the nuts D5 similarlyconvex at bottom.

' In operation, `the valve E, Vwhich is to'be planed, is placed betweenthe jaws C `C of the clamp, and by the rotation of the screw B said jawsfaremoved against and firmly hold the` valve'in the central positionproper to receive the action ofthe planing-tool. Bymeans ofthesupporting-nuts the frame of the planer is adjusted and held inposition, at any desired distance from the .basel plate` within a givenrange, and the graduations upon the sleeves D enable the planer-frame tobe set accu# rately parallel with "the base-plate. Y

It will be 'obvious thatin lieu of using a studl and a separate sleeve,asdescribed and shown, said members may, if preferred, be

IOO

formed in a single pieicce-that is to say, a rod or bolt of sufficientdiameter to receive the nut D2, ttedat one end tot-he basc-plate, and

having a thread of smaller diameter to receive the clamping-nut D3. n

vThe planer, which may be of any approved construction, does notconstitute part of my present invention, and need not therefore beherein described. As an example of a structure suitable for the purpose7reference may be had f tothe patent of J. T. Kichner and WV. H.

Odcnatt, No. 143,080, datedSeptember 23,

I claim as my invention and desire to secure by Letters Patentl. Thecombination, substantially as set forth, of a base-plate, a series ofvertical .planer-supports' connected thereto, guides or ways locatedupon the base-plate in a plane at right .angles to' said4 supports, anda valveclamp fitting said guides, and movableand adjustablethereon.

2. The combination, substantially as set forth, of a base-plate, aseries of planer-sup ports, each having an external thread engaging asupporting-nut, and an index or series of graduations below said thread,anda series of clamping-nuts engaging threads on the supports above thethreads of the supp orting-nuts. 3. The combination of a base-plate, aseries of vertical planer-supports connected thereto,

guides or ways located upon the'base-plate in a plane at right angles tosaid supports,lapair of valve-clamping jaws fitted to movelongitudinally on said guides, and a clampingscrew mounted in bearingson the base-plate, and having two threads of opposite lead,respectively, each of which engages a corresponding nut upon -one oilthe clamping-jawafsubstantially as set forth. DANIEL V. PEDRICK.

Witnesses:

J. SNOWDEN BELL,- H. C. AYER.

